JPS6160522A - Device and method of controlling gate passing process of harvest grain - Google Patents

Abstract

An apparatus having a charging lock chamber which can be alternately closed off with respect to a supply container by a movable closure head and an annular sealing edge in opposite relationship thereto as a seat therefor, on the one hand, and from a pneumatic conveyor conduit by a flap, on the other hand, for charging a feed of particles of bulk material into the conveyor conduit, is to require inter alia only one conveyor vessel for the virtually continuous conveying of bulk material, is not to require a metering device disposed at an upstream location, and is also to be suitable for conveying pressures of around 6 bars. That is achieved in that associated with the sealing edge is at least one annular feed duct for a curtain of air which is directed towards the closure head, and that the flap which is pivoted at one end has a force storage device engaging beneath it and in its closure position bears against the substantially horizontal edge of a mouth opening (18) of the charging lock chamber. Disposed downstream of the flap is an air feed device for the conveyor conduit and the sealing edge is provided on a resilient sealing ring which extends over an annular groove and which provides a wall portion of the feed duct, which wall portion can be deformed by means of air fed thereto in such a way that said sealing ring is at a spacing from an edge of the annular groove, thereby forming a blowing gap.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention comprises a gate chamber for supplying harvested product particles from a storage container or the like to a pneumatic conveying pipe, the gate chambers being alternately movable on the one hand. The closure head has an annular sealing edge as its seat, located opposite the closure head, which can be closed off against the storage container and on the other hand against the conveying pipe by means of a flapper valve. Game!・
The present invention relates to a device for controlling a passing process. Furthermore, the invention relates to a method for supplying harvested product particles to a pneumatic conveying pipe by means of the above-described device.

[Conventional technology and problems]

A device of this type is described in German Patent Application No. 3
It is known from the publication No. 144592. If the plurality of devices are sequentially and alternately introduced into the conveying process, a continuous conveying flow can be generated. Such devices are known from so-called tandem installations and require relatively high equipment costs. A conical body that can be raised and lowered pneumatically is used as the closing body, and a front conical closing body is attached to this circle 21 [4 ports at IC expense, and this front conical closing body is used to open the entrance to the room. must be controlled.

[Purpose of the invention]

The object of the present invention is to create a device for the near-continuous transport of harvested product particles such that only one transport container is required and no pre-connected equipment is required. .

Furthermore, the device can also be used for conveying pressures of 6 bar, making optimal use of the energy supplied for pneumatic conveying and guaranteeing reliable operation in all operating conditions, almost friction-free. The aim is to make it work as expected. It is also an object of the invention to make the device and the method implemented therewith inexpensive.

[Configuration J'3 and Effects of the Invention] This object, according to the invention, is such that the sealing edge is provided with at least one original supply channel for the air veil directed towards the closing head and is hinged at one end. This is achieved in that the flapper valve is pressed from below by a pressure accumulator and, in its closed position, rests against the approximately horizontal edge of the opening of the gate seedling.

Furthermore, an air supply line for the conveying line is connected downstream to the flapper valve.

According to another feature of the invention, the sealing edge is provided in an elastic packing ring, which is stretched over the annular groove and forms the wall of the supply channel, and the supplied air causes the sealing ring to be closed. is deformed in such a way that it forms a blowing gap at a distance from the edge of the annular groove.The thickness of the packing ring at the sealing edge is, according to the invention, at a point radially remote from the sealing edge. This is larger than the thickness of the packing ring, so that when air is blown into the packing ring, this packing ring curves slightly upwards and fills the blown gap with the image acting as a stepped support in the soil. Form.

The movement of the packing ring described above is further improved by the fact that the packing ring has a U-shaped cross-section, the legs of which are in contact with a support surface that covers the packing ring. This results in a groove 1 profile, the free chamber of which is defined by a very flexible wall, against which the blown air is directed as described above.

an annular groove is formed in the profile ring, on the underside of which a holder for a closing head is fixed, which closure head is preferably designed as a ball or as a deep dish;
It is structurally advantageous if it rests freely on a vertically extending support. In order to improve the evacuation, according to the invention, the closing head has a central opening into which the tip of the support (preferably a bellows cylinder) projects. The design of the support as a bellows cylinder has the advantage that the support is supplied with a flow medium which also generates a blowing air flow, so that the vertical movement of the support as well as the air blowing can be performed with a single control mechanism.

According to the invention, the outlet of the gate container is formed by a flapper valve, on which in the closed position a sensor or a corresponding detector is located opposite, which on the one hand has a sealing edge in order to carry out the above-mentioned process. on the other hand to the control mechanism for the support. Additionally, the sensor is connected to a time relay in order to be able to control the filling process.

With the above-mentioned procedure, it can be employed even for a conveying pressure of 6 bar, allows purely continuous conveying, and has a simple and inexpensive structure suitable for the purpose. A device is created that does this.

The main features are as follows.

1) Short filling time, small structure, and less exhaust M.

2) It can be reliably pressure-tightly closed even when the J3 is in a completely filled transport container, the transport pressure can be carefully relaxed in the case of high pressure, it is safe against incorrect operation, it has good accessibility, and it The system is not evacuated through the compressed air-sealed conical closure in which the valve is integrated.

3) The use of a problem-free bellows cylinder as support or closure drive ensures friction-free operation of the closure system.

During the filling process, the conveying piping is sealed against the goo 1 to the container, while conveyance continues in the conveying piping. Is in the conveyor pipe or is supplied into it! 2) Air supply continues to flow into the receiving container even during the filling process of the gate container.

The averaging of the conveying flow and the reduction of the exhaust volume result in considerable energy savings, and for this purpose the above-mentioned flapper valves are used in particular at the outlet.

Control is performed by means of multi-function, columnar drawing parts in conjunction with mechanical and pneumatic &[.

Precise filling status monitoring equipment is not required and electrical control costs only a small amount.

(Examples) The present invention will be described in detail below based on examples not shown in the drawings.

In FIG. 1, on the underside of the storage container 1 for powdered or granular harvested product, there is a connecting tube 2 with a sight glass 3, which is placed on a support plate 11 with a longitudinal axis A. The supporting plate 11 has a diameter d of, for example, 155 m.
It has m concentric openings 12.

The support plate 11 has a bolt 13 with a spacing of J: i/! i: A holding plate 14 is fixed at a distance, and this holding plate 14 has an opening 15 having a larger diameter C (here, 255 mm) than the opening 12. The gate container 2 is mounted on the holding plate 14.
0 is followed by a container wall 16 which is connected to the outlet cone 1 at a distance h (>350 mm) from the holding plate 14.
It is moving to 7.

The outlet cone 17 adjoins downwardly into an outlet connecting pipe 18 with an annular horizontal opening edge 19 .

The outlet connecting short pipe 18 has an outlet flapper valve 21 in the conveying direction
is connected downstream, and this outlet flapper valve 21 is laterally hinged at location 22, if the pressure in the gate vessel 20 is less than the conveying pressure in the conveying line 25 which is laterally connected to the outlet vessel 24. In the closed position shown in FIG. 1, it is pressed by the spring 23 against the rim 19 as a sealing seat. The outlet container 24 is located opposite the conveyance pipe 25.
A conveying air supply pipe 27 is attached to the inclined side wall 26 of [;1
I have one sip.

When the outlet flapper valve 21 is swung in the 1111'l1 position (in the direction of the arrow y), the outlet flapper valve 21 is activated by the termination mechanism 28 for the exhaust process (inductive type, argument type, magnetic type or optical type) to be described later. Activate the non-contact type switch 29 (which acts on the formula).

Between the holding plate 14 and the support plate 11, above the narrow elastic packing ring 46, there is an annular groove 31 which slopes upwards.
A rigid profile ring 3o having a shape is placed. A holding rod 33 of a base plate 34 is fixed to the underside of this profile ring 3o in such a way that the distance k between the base plate 34 and the exit circle 3Ii 17 corresponds approximately to the diameter d of the opening 12.

A bottom plate 36 is fixed above the central opening 35 of the substrate 34,
The lower edge 38 of a bellows 39 is connected to this bottom plate 36 by means of a tightening ring 37, and the upper edge 3"8h of the three bellows is fitted into a conical head 40. This bellows 39 is made of a material with low elasticity. The pointed end of the closure head 43 abuts a collar 42 of an upwardly tapered, bowl-shaped closure head 43 which has a central opening 44 in which the collar 42 is received.

In the closed position shown in FIGS. 2, 7 and 8, the closing head 43 has a grooved profile (packing ring) 45.
The grooved profile 45 overlaps the annular groove 31 of the profile ring 30, and its profile leg 47 is in contact with the lower side 48 of the support plate 11.

The front edge 49 of the grooved profile or sealing ring 45 forms a sealing edge, from which the thickness b of the profile is widened in the radial direction.

As mentioned above, the bellows 39 extends from the closure head 40 to the bottom plate 36, and has a constriction portion 51.
1 has a ring 52 on it.

The diameter f of the bottom plate 36 with respect to the air hose 57 is 12rIr.
rn connection bushing 56 and its air hose 5
At step 7, air is supplied to and exhausted from the seedling 54 inside the bellows 39.

FIG. 3 shows the exhaust hole 58 for the passage chamber 67 in the grooved profile 45 in the support plate 11 and the hole 59 in the molding 60 of the profile ring 30. The hole 59 transitions into a hose connection 61 for the air hose 57. Furthermore, the shape ring 3o has an annular shape! A further connection 62 to 1A31 is provided (see FIG. 4).

In the filling process shown in FIG. 5, the inside of the gate container 20 is filled with the r11 chain head 43 lowered.

The outlet flapper valve 21 in the outlet container 24 is pressed against the insulator opening edge 19 at the outlet connection and the sealing surface 4 of the υ tube 18 by means of the closing spring 23 and the air pressure in the conveying volume @25. The harvested product S flows in, and this process is carried out through the inlet connecting short pipe 2.
monitored through sight glass 3 located at

After the filling time, which can be adjusted by a time relay 63, has elapsed, air is introduced into the annular groove 31 as a feed channel according to FIG. The gap 64 between the air flows out as an air veil into the closing head 43, leaving the inlet cone or the space around the closing head 43 free of product, and the closing head 43 is simultaneously lifted by the bellows 39 and the inside? = 70 to the inlet connection short pipe 2.

Furthermore, the subsequently flowing air creates a conveying pressure in the gate container 20.

When the pressure in the gate container 20 becomes the same as the pressure in the conveying pipe 25, the outlet flapper valve 21 opens and the harvested product S flows into the conveying pipe 25.

The height level of the harvested product or product is determined by the outlet flapper valve 21.
When lowered, the outlet flapper valve 21 is lifted up to the sealing seat 19 by the spring 23.

The air flowing out from the gate container 20 is passed through the outlet flapper valve 21.
Clean the surface. The outlet flapper valve 21 is a switch 29
When actuated, the air supply is cut off by another valve (not shown) controlled by this switch 29, the bellows 39 is evacuated, and the sealing tip 41 is pulled out of the inlet cone or opening 44 of the closing head 43. It gets pulled out. The closing head 43 is held by the air pressure in the gate container 20 on the profile 45 or conical packing until the overpressure is reduced through the opening 44 in the closing head 43. The course of the outflowing air is particularly clearly visible in FIG. 9; likewise, in this process the dish-shaped closing head 43 takes up a distance a relative to the sealing tip 41.

At the end of the evacuation process, the closing head 43 falls under its own weight onto the sealing tip 41 and the filling process begins again.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of a device δ according to the invention with a gate container having an upper closing head and a lower outlet flapper valve, FIG. 2 is an enlarged partial sectional view of FIG. 1, and FIG. FIG. 4 is another partial sectional view corresponding to FIG. 2, and FIG. 5 is a partially enlarged sectional view of FIG. FIG. 1 is a sectional view of the device shown in FIG. 1 with the closing head lowered, FIG. 6 is a sectional view of the device during the blowing process in the closing head, and FIG. 7 is a sectional view of the device with the closing head closed and the outlet flapper valve. FIG. 8 is a cross-sectional view of the device with the device opened, FIG. 8 is a cross-sectional view of the emptied gate container, and FIG. 9 is a cross-sectional view of the V; . DESCRIPTION OF SYMBOLS 1...Storage container, 2...Inlet connection short pipe, 3...Sight glass, 19...Opening edge, 20...Gate container, 21...Outlet flapper valve, 23... spring, 25
... Conveyance piping, 31 ... Supply passage, 43 ... Closing head, 45 ... Grooved profile (packing ring), 70
...Gate room, S...Harvest items.

Claims (1)

[Claims] 1. A gate chamber for supplying harvested product particles from a storage container or the like to a pneumatic conveying pipe, which gate chamber alternately has a movable closing head on the one hand and a movable closing head opposite the closing head. In a device for controlling the gate passage process of harvested product particles, which can be closed to the storage container by means of an annular sealing edge as its seat located on the one hand and to the conveying pipe by means of a flapper valve, the sealing edge (49 ) to the air veil directed to the closure head (43)
A flapper valve (21), to which two annular supply channels (31) are attached and which is hinged at one end, is pressed from below by a pressure accumulator (23) and in its closed position the flapper valve (21) is hinged at one end.
Device for controlling the process of harvested product particles passing through the gate, characterized in that the device is in contact with the substantially horizontal edge (19) of the opening (18) of 0). 2. The device according to claim 1, characterized in that an air supply pipe (27) for the conveying pipe (25) is connected downstream to the flapper valve (21). 3. A sealing edge (49) is provided on the elastic packing ring (45), which is stretched over the annular groove and forms the wall of the supply channel (31), and is sealed by the supplied air. Then, the packing ring (45) is attached to the edge (6) of the annular groove.
5) A device according to claim 1, characterized in that it is modified to form a blowing gap (64) spaced apart from the air gap 5). 4. Packing ring (45) at seal edge (49)
4. A device according to claim 1, wherein the thickness (b) of the packing ring is greater than the thickness of the packing ring at a point radially remote from the sealing edge. 5. The packing ring (45) has a U-shaped cross section,
5. Device according to claim 1, characterized in that its U-shaped leg (47) rests on a support surface (48) covering the packing ring. 6. An annular groove (31) is formed in the profile ring (30);
6. Device according to claim 1, characterized in that a holder (33) for the closing head (43) is fixed on the underside of this profile ring (30). . 7. Any one of claims 1 to 6, characterized in that the closing head (43) is of ball-shaped design and rests freely on a vertically extending support (39). The device described in Crab. 8. Claim 7, characterized in that the closing head (43) has a central opening (44) into which the tip (41) of the support (39) projects. Equipment described in Section. 9. Claims 7 or 8, characterized in that the closing head (43) is a conical point, which rests freely on the sealing point (41) made of elastic material.
Equipment described in Section. 10. In an apparatus having a closed head provided on a support of varying length and a support internal chamber connected to at least one fluid line, the support (39)
10. Device according to claim 1, characterized in that the is an elastically deformable case and is firmly connected to the sealing tip (41). 11, the elastically deformable support (39) is connected to the profile ring (3
11. Device according to any one of claims 1 to 10, characterized in that it stands on a substrate (34) which is firmly connected to a substrate (34). 12. A sensor (29) or a corresponding detector is placed opposite the flapper valve (21) in the closed position;
12. Claims 1 to 11, characterized in that this is connected to a control mechanism for the air supply at the sealing edge (49) on the one hand and for the support (39) on the other hand. equipment. 13. Device according to any one of claims 1 to 12, characterized in that the sensor (39) is connected to an element such as a time relay (63). 14. In a method for controlling a gate passage process for supplying harvest particles from a storage container to a pneumatic conveying line, a pulse is generated when a flapper valve swings into its closed position, which pulse causes the evacuation of the fluid at the support. A method for controlling the gating process of harvested particles, characterized in that at the same time the supply of fluid to the supply channel is interrupted and the start of a filling time is recorded. 15. After the filling time, the supply channel and the support are supplied with fluid, which support is separated from the closing head for evacuation with the central opening open. The method described in Section 14. 16. The method according to claim 14 or 15, characterized in that the closing head is returned by gravity onto the support after lowering the support.